Started implementing netmap (untested!)

Also added some compiler warnings, restructured code accordingly
Wrote a prototype netmap implementation (untested!)
Added a necessary ioctl call

Receive still not working, send checksums missing
Need to continue development on real hardware
Fixed some bugs, still not running stable
Rewrote routines, seems to work better now (still defunct, though)
Netmap seems to work now, except for MAC address mismatch
Netmap seems to work! \o/

I will try netperf soon, if that works I will merge the branch into
master
Removed unnecessary malloc/free
Fixed minor bugs
Got a warning on Ubuntu, fixed
Forgot signedness
Added simplified setup script
Forgot ethtool
Fixed a bug in frame distribution
Added a UDP pingpong test
Changed port handling in Hive
Broadcasting UDP did not solve the problem

I will leave out udp_stream for now
Preparing merge of netmap into master